Respect max_open_trades when forceentering

closes #7489

freqtrade/rpc/rpc.py

@@ -773,6 +773,9 @@ class RPC:
             is_short = trade.is_short
             if not self._freqtrade.strategy.position_adjustment_enable:
                 raise RPCException(f'position for {pair} already open - id: {trade.id}')
+        else:
+            if Trade.get_open_trade_count() >= self._config['max_open_trades']:
+                raise RPCException("Maximum number of trades is reached.")
 
         if not stake_amount:
             # gen stake amount

tests/rpc/test_rpc.py

@@ -1030,6 +1030,7 @@ def test_rpc_count(mocker, default_conf, ticker, fee) -> None:
 
 def test_rpc_force_entry(mocker, default_conf, ticker, fee, limit_buy_order_open) -> None:
     default_conf['force_entry_enable'] = True
+    default_conf['max_open_trades'] = 0
     mocker.patch('freqtrade.rpc.telegram.Telegram', MagicMock())
     buy_mm = MagicMock(return_value=limit_buy_order_open)
     mocker.patch.multiple(
@@ -1044,6 +1045,10 @@ def test_rpc_force_entry(mocker, default_conf, ticker, fee, limit_buy_order_open
     patch_get_signal(freqtradebot)
     rpc = RPC(freqtradebot)
     pair = 'ETH/BTC'
+    with pytest.raises(RPCException, match='Maximum number of trades is reached.'):
+        rpc._rpc_force_entry(pair, None)
+    freqtradebot.config['max_open_trades'] = 5
+
     trade = rpc._rpc_force_entry(pair, None)
     assert isinstance(trade, Trade)
     assert trade.pair == pair